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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Takes place in straight line
Takes place in curve
Takes place in one direction
Is steady and uniform

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of

A paraboloid
None of these
An ellipse
A triangle

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Hydraulics and Fluid Mechanics in ME
According to equation of continuity,

a1v1 = a2v2
w1v1 = w2v2
a1/v1 = a2/v2
w1a1 = w2a2

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Hydraulics and Fluid Mechanics in ME
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

μ π³ N² R² /1800 t
μ π³ N² R² /3600 t
μ π³ N² R⁴ /3600 t
μ π³ N² R⁴ /1800 t

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Hydraulics and Fluid Mechanics in ME
In a Kaplan turbine runner, the numbers of blades are generally between

4 to 8
16 to 24
8 to 16
2 to 4

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Hydraulics and Fluid Mechanics in ME
Which of the following statement is correct as regard to water wheels?

They have slow speeds
All of these
They are suitable even for low water heads
They give constant efficiency, even if the discharge is not constant

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